I'm looking for a great unbreakable bong/bubbler. I want it as smooth as possible, so I assume that means percolator(s), so I'm leaning towards the Jet Subzero (mini) and the Steele Concept. Is there a better polycarbonate bong out there? Has anyone tried these two and have an opinion one way or the other? I like the look and size of the Steele Concept, but I'm a sucker for the "science" behind the Jet products (and like the carb system). help?!